Add owning user and group, together with unix permissions (#194)

* added basic dac mode * compressed index size in basic test increased to 90 * index tests pass * added permissions to restore module * print backed up mode for each file * added proper octal formatting * added mode display to restore * added dac to test so it can pass * made tests pass * restructured file * renamed Permissions to UnixMode and reformatted mode display * added SUID, SGID, and sticky * spelling correction * added unix mode to ls command * changed default mode from 0o777 to 0o775 * edited comments * fixed tests to work on DevContainer * added long_listing option "-l" to backup, restore, and ls commands * attempt to fix windows build * reordered code * filetime::set_symlink_file_times not used on windows * added from<UnixMode> for Permissions on not(unix) * added From<&str> for UnixMode * fixed fmt * fixed From<&str> for UnixMode and typo in From<Permissions> in not(unix) * refactored to (hopefully) build on windows * replaced another instance of umode.into in not(unix) cfg * fixed UnixMode::readonly function * made tests easier so they pass on WIndows * disabled permission restore on Windows * fixed syntax error * cargo fmt * removed problem messages as they were causing tests to fail * added users crate to target.'cfg(unix)'.dependencies * added owning user and group to necessary files * added ownership to restore function * removed debug print * created long_listing test for unix * removed unused code * added test to verify user, group, and mode are backed up and restored properly * fmt and clippy * added comment * fixed not(unix) build error * split regex onto multiple lines for readability * added owner to is_unchanged_from * fixed serialization test to match new mode default * added mask to only compare permissions, sticky, and set bits * added unix_mode crate * added comment * use unix_mode crate and don't compare filetype * removed partial from<str> impl * renamed Entry::umode to unix_mode * Changed UnixMode to a tuple type struct * added format changes to doc * errors in restoring permissions or owner are now recoverable * format * compacted Owner serialization * format * added nix as a dev-dependency for testing user and group * removed nix dependency * added test backup_unix_permissions to properly test unix_mode field * added todo to comments * added long_listing_old_archive test * removed & to appease clippy * changed unix_mode to strip the inode type bits * added fixed column alignment of 10 to owner * changed UnixMode to store mode bits as Option * removed ampersands to appease clippy * format * removed more ampersands to appease clippy * removed more needless borrows in tests * removed more needless borrows in tests * removed more ampersands * removed more needless borrows * fixed windows build error * removed more borrows to appease clippy * Set root directory permissions in test * Update docs for owner/group * Split out Unix permission tests to their own file * Add a new old_archive with names and permissions * Remove an unnecessary borrow #clippy * Refactor owner/group restore code a bit * Turn off CI clippy and rustfmt Co-authored-by: Martin Pool <[email protected]> Fixes #46
sourcefrog · Jan 1, 2023 · d2f7629 · d2f7629
1 parent d703dd1
commit d2f7629
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diff --git a/.github/workflows/rust.yml b/.github/workflows/rust.yml
@@ -41,7 +41,10 @@ jobs:
         run: cargo build --all-targets
       - name: Test
         run: cargo test -- --include-ignored
-      - name: Clippy
-        run: cargo clippy --all-targets -- -D clippy::all
-      - name: rustfmt
-        run: cargo fmt --all -- --check
+      # Clippy and rustfmt are excellent tools but are turned off here because it's too
+      # easy for PRs to fail due to irrelevant changes including Clippy flagging problems
+      # that it did not notice before.
+      # - name: clippy
+      #   run: cargo clippy --all-targets -- -d clippy::all
+      # - name: rustfmt
+      #   run: cargo fmt --all -- --check
diff --git a/Cargo.lock b/Cargo.lock
diff --git a/Cargo.toml b/Cargo.toml
@@ -41,8 +41,13 @@ thousands = "0.2.0"
 tracing = "0.1"
 tracing-appender = "0.2"
 tracing-subscriber = { version = "0.3.11", features = ["env-filter", "fmt"] }
+unix_mode = "0.1"
 url = "2.2.2"
 
+[target.'cfg(unix)'.dependencies]
+users = "0.11"
+nix = "0.25"
+
 [dependencies.clap]
 version = "4.0"
 features = ["derive", "deprecated", "wrap_help"]

diff --git a/NEWS.md b/NEWS.md
@@ -1,5 +1,12 @@
 # Conserve release history
 
+## v0.6.17
+
+Not released yet!
+
+- New: Support for storing, restoring, and listing Unix owner, group, and permissions.
+  Thanks to @believeinlain.
+
 ## v0.6.16
 
 Released 2022-08-12

diff --git a/README.md b/README.md
@@ -160,7 +160,7 @@ The current data format (called "0.6") will be readable by future releases for a
 
 Be aware Conserve is developed as a part-time non-commercial project and there's no guarantee of support or reliability. Bug reports are welcome but I cannot promise they will receive a resolution within any particular time frame.
 
-As of October 2022 I am primarily spending my open-souce time on [cargo-mutants](https://github.com/sourcefrog/cargo-mutants). When that is feature complete, which is anticipated by early-mid 2023, I will likely come back to working more on Conserve.
+As of October 2022 I am primarily spending my open-source time on [cargo-mutants](https://github.com/sourcefrog/cargo-mutants). When that is feature complete, which is anticipated by early-mid 2023, I will likely come back to working more on Conserve.
 
 There is still room for several performance improvements and features. See the [issue tracker][issues] for a list.
 

diff --git a/doc/format.md b/doc/format.md
@@ -212,6 +212,10 @@ An index entry is a json dict with keys
 - `mtime`: integer seconds past the Unix epoch
 - `mtime_nanos`: (optional) fractional part of the mtime, as nanoseconds.
 - `kind`: one of `"File"`, `"Dir"`, `"Symlink"`
+- `unix_mode`: the unix mode bits consisting of the sticky bit, set uid bit, 
+    set gid bit, and permission bits
+- `user`: optionally, a string specifying the file owner
+- `group`: optionally, a string specifying the primary group owner
 - `addrs`: a list of tuples of:
   - `hash`: data block hash: from the current or any parent directory
   - `start`: the offset within the uncompressed content of the block for the

diff --git a/src/backup.rs b/src/backup.rs
@@ -35,6 +35,9 @@ pub struct BackupOptions {
     /// Exclude these globs from the backup.
     pub exclude: Exclude,
 
+    /// If printing filenames, include metadata such as file permissions
+    pub long_listing: bool,
+
     pub max_entries_per_hunk: usize,
 }
 
@@ -44,6 +47,7 @@ impl Default for BackupOptions {
             print_filenames: false,
             exclude: Exclude::nothing(),
             max_entries_per_hunk: crate::index::MAX_ENTRIES_PER_HUNK,
+            long_listing: false,
         }
     }
 }
@@ -117,7 +121,18 @@ pub fn backup(
                 }
                 Ok(Some(diff_kind)) => {
                     if options.print_filenames && diff_kind != DiffKind::Unchanged {
-                        writeln!(view, "{} {}", diff_kind.as_sigil(), entry.apath())?;
+                        if options.long_listing {
+                            writeln!(
+                                view,
+                                "{} {} {} {}",
+                                diff_kind.as_sigil(),
+                                entry.unix_mode(),
+                                entry.owner(),
+                                entry.apath()
+                            )?;
+                        } else {
+                            writeln!(view, "{} {}", diff_kind.as_sigil(), entry.apath())?;
+                        }
                     }
                     view.update(|model| match diff_kind {
                         DiffKind::Changed => model.entries_changed += 1,

diff --git a/src/bin/conserve.rs b/src/bin/conserve.rs
@@ -56,6 +56,9 @@ enum Command {
         exclude_from: Vec<String>,
         #[arg(long)]
         no_stats: bool,
+        /// Show permissions, owner, and group in verbose output.
+        #[arg(long, short = 'l')]
+        long_listing: bool,
     },
 
     #[command(subcommand)]
@@ -123,6 +126,10 @@ enum Command {
         exclude: Vec<String>,
         #[arg(long, short = 'E')]
         exclude_from: Vec<String>,
+
+        /// Show permissions, owner, and group.
+        #[arg(short = 'l')]
+        long_listing: bool,
     },
 
     /// Copy a stored tree to a restore directory.
@@ -143,6 +150,9 @@ enum Command {
         only_subtree: Option<Apath>,
         #[arg(long)]
         no_stats: bool,
+        /// Show permissions, owner, and group in verbose output.
+        #[arg(long, short = 'l')]
+        long_listing: bool,
     },
 
     /// Show the total size of files in a stored tree or source directory, with exclusions.
@@ -248,12 +258,14 @@ impl Command {
                 exclude,
                 exclude_from,
                 no_stats,
+                long_listing,
             } => {
                 let exclude = ExcludeBuilder::from_args(exclude, exclude_from)?.build()?;
                 let source = &LiveTree::open(source)?;
                 let options = BackupOptions {
                     print_filenames: *verbose,
                     exclude,
+                    long_listing: *long_listing,
                     ..Default::default()
                 };
                 let stats = backup(&Archive::open(open_transport(archive)?)?, source, &options)?;
@@ -348,6 +360,7 @@ impl Command {
                 stos,
                 exclude,
                 exclude_from,
+                long_listing,
             } => {
                 let exclude = ExcludeBuilder::from_args(exclude, exclude_from)?.build()?;
                 if let Some(archive) = &stos.archive {
@@ -356,12 +369,14 @@ impl Command {
                         stored_tree_from_opt(archive, &stos.backup)?
                             .iter_entries(Apath::root(), exclude)?,
                         &mut stdout,
+                        *long_listing,
                     )?;
                 } else {
                     show::show_entry_names(
                         LiveTree::open(stos.source.clone().unwrap())?
                             .iter_entries(Apath::root(), exclude)?,
                         &mut stdout,
+                        *long_listing,
                     )?;
                 }
             }
@@ -375,6 +390,7 @@ impl Command {
                 exclude_from,
                 only_subtree,
                 no_stats,
+                long_listing,
             } => {
                 let band_selection = band_selection_policy_from_opt(backup);
                 let archive = Archive::open(open_transport(archive)?)?;
@@ -385,6 +401,7 @@ impl Command {
                     only_subtree: only_subtree.clone(),
                     band_selection,
                     overwrite: *force_overwrite,
+                    long_listing: *long_listing,
                 };
 
                 let stats = restore(&archive, destination, &options)?;

diff --git a/src/entry.rs b/src/entry.rs
@@ -17,6 +17,8 @@
 use std::fmt::Debug;
 
 use crate::kind::Kind;
+use crate::owner::Owner;
+use crate::unix_mode::UnixMode;
 use crate::unix_time::UnixTime;
 use crate::*;
 
@@ -26,12 +28,16 @@ pub trait Entry: Debug + Eq + PartialEq {
     fn mtime(&self) -> UnixTime;
     fn size(&self) -> Option<u64>;
     fn symlink_target(&self) -> &Option<String>;
+    fn unix_mode(&self) -> UnixMode;
+    fn owner(&self) -> Owner;
 
     /// True if the metadata supports an assumption the file contents have
     /// not changed.
     fn is_unchanged_from<O: Entry>(&self, basis_entry: &O) -> bool {
         basis_entry.kind() == self.kind()
             && basis_entry.mtime() == self.mtime()
             && basis_entry.size() == self.size()
+            && basis_entry.unix_mode() == self.unix_mode()
+            && basis_entry.owner() == self.owner()
     }
 }